I think this is a great idea and like the new feature but surely if 2 players per slot is selected then there's room for up to 6 players in the game. This seems like a arbitrary and unnecessary restriction.

i think solution is simple mate,enable players to invite anyone including him/herselves in one team and in any times player would liked to.

for example, assume, i have 2 team mates i do like to team up with and i do like to play a 4 polymorphic....now i would like to have one of three, me or one my two fellas using him twice, rest are for once....so it is like playing a quads game with 3 ppl in my team, one of 3 has two seats...

I think this is available in case game maker is given the flexibility to invite himself any times he likes and also to invite his friends for empty seats if any.